mirror of
https://github.com/rtic-rs/rtic.git
synced 2024-12-12 05:07:16 +01:00
276 lines
12 KiB
HTML
276 lines
12 KiB
HTML
|
<!DOCTYPE HTML>
|
||
|
|
<html lang="en" class="light sidebar-visible" dir="ltr">
|
||
|
|
<head>
|
||
|
|
<!-- Book generated using mdBook -->
|
||
|
|
<meta charset="UTF-8">
|
||
|
|
<title>Resource de-structure-ing - Real-Time Interrupt-driven Concurrency</title>
|
||
|
|
|
||
|
|
|
||
|
|
<!-- Custom HTML head -->
|
||
|
|
|
||
|
|
<meta name="description" content="">
|
||
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
|
|
<meta name="theme-color" content="#ffffff">
|
||
|
|
|
||
|
|
<link rel="icon" href="../../favicon.svg">
|
||
|
|
<link rel="shortcut icon" href="../../favicon.png">
|
||
|
|
<link rel="stylesheet" href="../../css/variables.css">
|
||
|
|
<link rel="stylesheet" href="../../css/general.css">
|
||
|
|
<link rel="stylesheet" href="../../css/chrome.css">
|
||
|
|
<link rel="stylesheet" href="../../css/print.css" media="print">
|
||
|
|
|
||
|
|
<!-- Fonts -->
|
||
|
|
<link rel="stylesheet" href="../../FontAwesome/css/font-awesome.css">
|
||
|
|
<link rel="stylesheet" href="../../fonts/fonts.css">
|
||
|
|
|
||
|
|
<!-- Highlight.js Stylesheets -->
|
||
|
|
<link rel="stylesheet" href="../../highlight.css">
|
||
|
|
<link rel="stylesheet" href="../../tomorrow-night.css">
|
||
|
|
<link rel="stylesheet" href="../../ayu-highlight.css">
|
||
|
|
|
||
|
|
<!-- Custom theme stylesheets -->
|
||
|
|
|
||
|
|
|
||
|
|
<!-- Provide site root to javascript -->
|
||
|
|
<script>
|
||
|
|
var path_to_root = "../../";
|
||
|
|
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
|
||
|
|
</script>
|
||
|
|
<!-- Start loading toc.js asap -->
|
||
|
|
<script src="../../toc.js"></script>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div id="body-container">
|
||
|
|
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
||
|
|
<script>
|
||
|
|
try {
|
||
|
|
var theme = localStorage.getItem('mdbook-theme');
|
||
|
|
var sidebar = localStorage.getItem('mdbook-sidebar');
|
||
|
|
|
||
|
|
if (theme.startsWith('"') && theme.endsWith('"')) {
|
||
|
|
localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
|
||
|
|
}
|
||
|
|
|
||
|
|
if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
|
||
|
|
localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
|
||
|
|
}
|
||
|
|
} catch (e) { }
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<!-- Set the theme before any content is loaded, prevents flash -->
|
||
|
|
<script>
|
||
|
|
var theme;
|
||
|
|
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
|
||
|
|
if (theme === null || theme === undefined) { theme = default_theme; }
|
||
|
|
const html = document.documentElement;
|
||
|
|
html.classList.remove('light')
|
||
|
|
html.classList.add(theme);
|
||
|
|
html.classList.add("js");
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<input type="checkbox" id="sidebar-toggle-anchor" class="hidden">
|
||
|
|
|
||
|
|
<!-- Hide / unhide sidebar before it is displayed -->
|
||
|
|
<script>
|
||
|
|
var sidebar = null;
|
||
|
|
var sidebar_toggle = document.getElementById("sidebar-toggle-anchor");
|
||
|
|
if (document.body.clientWidth >= 1080) {
|
||
|
|
try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
|
||
|
|
sidebar = sidebar || 'visible';
|
||
|
|
} else {
|
||
|
|
sidebar = 'hidden';
|
||
|
|
}
|
||
|
|
sidebar_toggle.checked = sidebar === 'visible';
|
||
|
|
html.classList.remove('sidebar-visible');
|
||
|
|
html.classList.add("sidebar-" + sidebar);
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||
|
|
<!-- populated by js -->
|
||
|
|
<mdbook-sidebar-scrollbox class="sidebar-scrollbox"></mdbook-sidebar-scrollbox>
|
||
|
|
<noscript>
|
||
|
|
<iframe class="sidebar-iframe-outer" src="../../toc.html"></iframe>
|
||
|
|
</noscript>
|
||
|
|
<div id="sidebar-resize-handle" class="sidebar-resize-handle">
|
||
|
|
<div class="sidebar-resize-indicator"></div>
|
||
|
|
</div>
|
||
|
|
</nav>
|
||
|
|
|
||
|
|
<div id="page-wrapper" class="page-wrapper">
|
||
|
|
|
||
|
|
<div class="page">
|
||
|
|
<div id="menu-bar-hover-placeholder"></div>
|
||
|
|
<div id="menu-bar" class="menu-bar sticky">
|
||
|
|
<div class="left-buttons">
|
||
|
|
<label id="sidebar-toggle" class="icon-button" for="sidebar-toggle-anchor" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
|
||
|
|
<i class="fa fa-bars"></i>
|
||
|
|
</label>
|
||
|
|
<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
|
||
|
|
<i class="fa fa-paint-brush"></i>
|
||
|
|
</button>
|
||
|
|
<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
|
||
|
|
<li role="none"><button role="menuitem" class="theme" id="light">Light</button></li>
|
||
|
|
<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
|
||
|
|
<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
|
||
|
|
<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
|
||
|
|
<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
|
||
|
|
</ul>
|
||
|
|
<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
|
||
|
|
<i class="fa fa-search"></i>
|
||
|
|
</button>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<h1 class="menu-title">Real-Time Interrupt-driven Concurrency</h1>
|
||
|
|
|
||
|
|
<div class="right-buttons">
|
||
|
|
<a href="../../print.html" title="Print this book" aria-label="Print this book">
|
||
|
|
<i id="print-button" class="fa fa-print"></i>
|
||
|
|
</a>
|
||
|
|
<a href="https://github.com/rtic-rs/rtic" title="Git repository" aria-label="Git repository">
|
||
|
|
<i id="git-repository-button" class="fa fa-github"></i>
|
||
|
|
</a>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div id="search-wrapper" class="hidden">
|
||
|
|
<form id="searchbar-outer" class="searchbar-outer">
|
||
|
|
<input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
|
||
|
|
</form>
|
||
|
|
<div id="searchresults-outer" class="searchresults-outer hidden">
|
||
|
|
<div id="searchresults-header" class="searchresults-header"></div>
|
||
|
|
<ul id="searchresults">
|
||
|
|
</ul>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
|
||
|
|
<script>
|
||
|
|
document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
|
||
|
|
document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
|
||
|
|
Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
|
||
|
|
link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
|
||
|
|
});
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<div id="content" class="content">
|
||
|
|
<main>
|
||
|
|
<h1 id="resource-de-structure-ing"><a class="header" href="#resource-de-structure-ing">Resource de-structure-ing</a></h1>
|
||
|
|
<p>Destructuring task resources might help readability if a task takes multiple
|
||
|
|
resources. Here are two examples on how to split up the resource struct:</p>
|
||
|
|
<pre><code class="language-rust noplayground">//! examples/destructure.rs
|
||
|
|
|
||
|
|
#![no_main]
|
||
|
|
#![no_std]
|
||
|
|
#![deny(warnings)]
|
||
|
|
#![deny(unsafe_code)]
|
||
|
|
#![deny(missing_docs)]
|
||
|
|
|
||
|
|
use panic_semihosting as _;
|
||
|
|
|
||
|
|
#[rtic::app(device = lm3s6965, dispatchers = [UART0])]
|
||
|
|
mod app {
|
||
|
|
use cortex_m_semihosting::{debug, hprintln};
|
||
|
|
|
||
|
|
#[shared]
|
||
|
|
struct Shared {
|
||
|
|
a: u32,
|
||
|
|
b: u32,
|
||
|
|
c: u32,
|
||
|
|
}
|
||
|
|
|
||
|
|
#[local]
|
||
|
|
struct Local {}
|
||
|
|
|
||
|
|
#[init]
|
||
|
|
fn init(_: init::Context) -> (Shared, Local) {
|
||
|
|
foo::spawn().unwrap();
|
||
|
|
bar::spawn().unwrap();
|
||
|
|
|
||
|
|
(Shared { a: 0, b: 1, c: 2 }, Local {})
|
||
|
|
}
|
||
|
|
|
||
|
|
#[idle]
|
||
|
|
fn idle(_: idle::Context) -> ! {
|
||
|
|
debug::exit(debug::EXIT_SUCCESS); // Exit QEMU simulator
|
||
|
|
loop {}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Direct destructure
|
||
|
|
#[task(shared = [&a, &b, &c], priority = 1)]
|
||
|
|
async fn foo(cx: foo::Context) {
|
||
|
|
let a = cx.shared.a;
|
||
|
|
let b = cx.shared.b;
|
||
|
|
let c = cx.shared.c;
|
||
|
|
|
||
|
|
hprintln!("foo: a = {}, b = {}, c = {}", a, b, c);
|
||
|
|
}
|
||
|
|
|
||
|
|
// De-structure-ing syntax
|
||
|
|
#[task(shared = [&a, &b, &c], priority = 1)]
|
||
|
|
async fn bar(cx: bar::Context) {
|
||
|
|
let bar::SharedResources { a, b, c, .. } = cx.shared;
|
||
|
|
|
||
|
|
hprintln!("bar: a = {}, b = {}, c = {}", a, b, c);
|
||
|
|
}
|
||
|
|
}</code></pre>
|
||
|
|
<pre><code class="language-console">$ cargo xtask qemu --verbose --example destructure
|
||
|
|
</code></pre>
|
||
|
|
<pre><code class="language-console">bar: a = 0, b = 1, c = 2
|
||
|
|
foo: a = 0, b = 1, c = 2
|
||
|
|
</code></pre>
|
||
|
|
|
||
|
|
</main>
|
||
|
|
|
||
|
|
<nav class="nav-wrapper" aria-label="Page navigation">
|
||
|
|
<!-- Mobile navigation buttons -->
|
||
|
|
<a rel="prev" href="../../by-example/tips/index.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
||
|
|
<i class="fa fa-angle-left"></i>
|
||
|
|
</a>
|
||
|
|
|
||
|
|
<a rel="next prefetch" href="../../by-example/tips/indirection.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||
|
|
<i class="fa fa-angle-right"></i>
|
||
|
|
</a>
|
||
|
|
|
||
|
|
<div style="clear: both"></div>
|
||
|
|
</nav>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<nav class="nav-wide-wrapper" aria-label="Page navigation">
|
||
|
|
<a rel="prev" href="../../by-example/tips/index.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
||
|
|
<i class="fa fa-angle-left"></i>
|
||
|
|
</a>
|
||
|
|
|
||
|
|
<a rel="next prefetch" href="../../by-example/tips/indirection.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||
|
|
<i class="fa fa-angle-right"></i>
|
||
|
|
</a>
|
||
|
|
</nav>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<script>
|
||
|
|
window.playground_copyable = true;
|
||
|
|
</script>
|
||
|
|
|
||
|
|
|
||
|
|
<script src="../../elasticlunr.min.js"></script>
|
||
|
|
<script src="../../mark.min.js"></script>
|
||
|
|
<script src="../../searcher.js"></script>
|
||
|
|
|
||
|
|
<script src="../../clipboard.min.js"></script>
|
||
|
|
<script src="../../highlight.js"></script>
|
||
|
|
<script src="../../book.js"></script>
|
||
|
|
|
||
|
|
<!-- Custom JS scripts -->
|
||
|
|
<script src="../../mermaid.min.js"></script>
|
||
|
|
<script src="../../mermaid-init.js"></script>
|
||
|
|
|
||
|
|
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|